Millions of the proletariat class experienced some form of repression from the state, stemming back to the October Revolution and the nature of totalitarianism.
The state engaged in numerous deportations and transfers of these groups, often on the scale of entire nationalities.
Other groups were forcefully migrated in the opposite direction in an effort to replaced those affected by mass ethnic cleansing.
Economic repression and their causal policies was the root cause of millions of deaths, often through delegating all power and thought to the state, who engaged in mass collectivization of all property and resources, and, in futile attempts to stimulate production, caused multiple man-made mass famines, under which millions suffered.
This was enacted through a variety of means, including censorship of literature, film, images, and general control over information.